Pyrimidine compounds and their use

   
   

Pyrimidine compounds of formula (1): ##STR1## wherein R.sup.1 is C.sub.3 -C.sub.7 alkynyl optionally substituted with halogen; R.sup.2 and R.sup.3 are independently hydrogen or the like; and R.sup.4 is C.sub.3 -C.sub.7 alkynyloxy optionally substituted with halogen, optionally substituted phenyl, or the like have an excellent pesticidal effect.

Residui della pirimidina della formula (1): ## del ## STR1 in cui R.sup.1 è C.sub.3 - il alkynyl C.sub.7 facoltativamente sostituito con alogeno; R.sup.2 e R.sup.3 sono indipendentemente idrogeno e simili; e R.sup.4 è C.sub.3 - il alkynyloxy C.sub.7 facoltativamente sostituito con alogeno, il fenile facoltativamente sostituito, e simili hanno un effetto antiparassitario eccellente.

 
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